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Re: thread stack size
From: |
Bruno Haible |
Subject: |
Re: thread stack size |
Date: |
Sat, 24 Oct 2009 16:04:01 +0200 |
User-agent: |
KMail/1.9.9 |
Pádraig Brady wrote:
> + * lib/copy-file.c (copy_file_preserving): Used a 32KiB malloced
> buffer.
Fine with me too. Yes, 32 KB is more than you can safely allocate on the stack
in a multithreaded program: The default thread stack size is:
- glibc i386, x86_64 7.4 MB
- Tru64 5.1 5.2 MB
- Cygwin 1.8 MB
- Solaris 7..10 1 MB
- MacOS X 10.5 460 KB
- AIX 5 98 KB
- OpenBSD 4.0 64 KB
- HP-UX 11 16 KB
And the default stack size for sigaltstack, SIGSTKSZ, is
- only 16 KB on some platforms: IRIX, OSF/1, Haiku.
- only 8 KB on some platforms: glibc, NetBSD, OpenBSD, HP-UX, Solaris.
- only 4 KB on some platforms: AIX.
Bruno
=============== Program for determining the default thread stack size =========
#include <alloca.h>
#include <pthread.h>
#include <stdio.h>
void* threadfunc (void*p) {
int n = 0;
for (;;) {
printf("Allocated %d bytes\n", n);
fflush(stdout);
n += 128;
*((volatile char *) alloca(128)) = 0;
}
}
int main()
{
pthread_t thread;
pthread_create(&thread, NULL, threadfunc, NULL);
for (;;) {}
}
- Re: [PATCH] md5: accepts a new --threads option, (continued)
- Re: [PATCH] md5: accepts a new --threads option, Jim Meyering, 2009/10/23
- Re: [PATCH] md5: accepts a new --threads option, Paolo Bonzini, 2009/10/23
- Re: [PATCH] md5: accepts a new --threads option, Pádraig Brady, 2009/10/23
- Re: [PATCH] md5: accepts a new --threads option, Jim Meyering, 2009/10/23
- Re: [PATCH] md5: accepts a new --threads option, Pádraig Brady, 2009/10/23
- Re: [PATCH] md5: accepts a new --threads option, Jim Meyering, 2009/10/23
- Re: thread stack size,
Bruno Haible <=
- Re: thread stack size, Paolo Bonzini, 2009/10/24
- Re: thread stack size, Bruno Haible, 2009/10/25
- Re: [PATCH] md5: accepts a new --threads option, Jim Meyering, 2009/10/23
- Re: [PATCH] md5: accepts a new --threads option, Ralf Wildenhues, 2009/10/23